Lapita (Diptera: Dolichopodidae: Sciapodinae) from Fiji and Vanuatu

in Tijdschrift voor Entomologie
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Lapita Bickel (Diptera: Dolichopodidae: Sciapodinae), previously known only from New Caledonia, is newly described from Fiji and nearby Pacific archipelagoes, and includes 21 species in four species groups. The vakalevu group comprises four new species, Lapita vakalevu from Fiji and Tonga, and L. morleyi, L. savura and L. tavuki, all from Fiji. The tuimerekei group comprises two new Fijian species, L. batiqere and L. tuimerekei. The paradoxa group comprises two new species from Viti Levu, Fiji, L. paradoxa and L. maafusalatu. The denticauda group includes 13 species, L. greenwoodi (Bezzi), comb. n., from Viti Levu, L. sanma, a new species from Vanuatu (Espiritu Santo), and eleven additional new species, all from Fiji: L. adusta, L. macuata, L. coloisuva, L. delaco, L. timocii, L. bicolor, L. veilaselase, L. kuitarua, L. denticauda, L. sarnati, and L. vatudiri. Most Lapita species are known only from single or adjacent sites, suggesting a high level of local endemicity. As demonstrated elsewhere for the Sciapodinae, there is a strong connection between Fiji and Vanuatu, with species groups shared between the two archipelagoes. Biogeographical processes to account for the distribution of Lapita on Fiji and New Caledonia are discussed.

Lapita (Diptera: Dolichopodidae: Sciapodinae) from Fiji and Vanuatu

in Tijdschrift voor Entomologie

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References

BezziM.1928. Diptera Brachycera and Athericera of the Fiji Islands based on material in the British Museum (Natural History). — British Museum (Natural History)London220 pp.

BickelD.J.1994. The Australian Sciapodinae (Diptera: Dolichopodidae), with a review of the Oriental and Australasian faunas, and a world conspectus of the subfamily. — Records of the Australian Museum Supplement 21: 1394.

BickelD.J.2002. The Sciapodinae of New Caledonia (Diptera: Dolichopodidae). — Zoologia Neocaledonica Mémoires du Muséum National d’Histoire NaturelleParis. 187: 1183.

BickelD.J.2005. Plagiozopelma (Diptera: Dolichopodidae: Sciapodinae) from Fiji, Vanuatu, and the Solomon Islands. — In EvenhuisN.L. & BickelD.J. (Eds) Fiji Arthropods I. Bishop Museum Occasional Papers 82: 4761.

BickelD.J.2006a. Parentia (Diptera: Dolichopodidae) from Fiji: A biogeographic link with New Caledonia and New Zealand. — In EvenhuisN.L. & BickelD.J. (Eds) Fiji Arthropods V. Bishop Museum Occasional Papers 89: 4550.

BickelD.J.2006b. The Amblypsilopus pulvillatus species group (Diptera: Dolichopodidae: Sciapodinae), a radiation in the western Pacific. — In EvenhuisN.L. & BickelD.J. (Eds) Fiji Arthropods VI. Bishop Museum Occasional Papers 90: 5166.

BickelD.J.2008a. Krakatauia (Diptera: Dolichopodidae: Sciapodinae) from the southwest Pacific, with a focus on the radiation in Fiji. — In EvenhuisN.L. & BickelD.J. (Eds) Fiji Arthropods XI. Bishop Museum Occasional Papers 97: 2164.

BickelD.J.2008b. Pouebo (Diptera: Dolichopodidae), a remarkable new genus from New Caledonia, with secondary symmetry in the male postabdomen. — Zoologia Neocaledonica 6 Mémoires du Muséum National d’Histoire Naturelle 197: 4955.

BickelD.J.2009. Amblypsilopus (Diptera: Dolichopodidae: Sciapodinae) from the Southwest Pacific, with a focus on the radiation in Fiji and Vanuatu. — In EvenhuisN.L. & BickelD.J. (Eds) Fiji Arthropods XIII. Bishop Museum Occasional Papers 103: 361.

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Figures

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    Lapita bicolor male, habitus, left lateral.

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    Hypopygium, left lateral — a, Lapita vakalevu (Viti Levu); b, L. vakalevu (‘Eua, Tonga); c, L. morleyi, cercus, left lateral; d, L. tavuki. Legend: cer, cercus; epa, epandrium; el, epandrial lobe; hyp, hypandrium; pha, phallus; sur, surstylus.

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    Hypopygium, left lateral — a, Lapita macuata; b, L. sarnati; c, L. denticauda.

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    Hypopygium, left lateral — a, Lapita kuitarua; b, L. coloisuva; c, L. sanma.

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    Hypopygium, left lateral — a, Lapita vatudiri; b, L. veilaselase

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    a, Lapita bicolor, postabdomen, left lateral. b, L. adusta, hypopygium, left lateral.

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    Lapita greenwoodi, holotype — a, head and throax, dorsal; b, habitus, left lateral; c, male postabdomen. Lapita delaco, holotype — d, left lateral habitus; e, male postabdomen.

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    Hypopygium, left lateral — a, Lapita timocii; b, L. maafusalatu; c, L. paradoxa.

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    Lapita tuimerekei — a, hypopygium, left lateral; b, male leg I, posterior; c, male leg I, tarsomeres 4–5, anterior. d, L. batiqere, hypopygium, left lateral.

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